it is quit frustrating to do what Hans is asking in his description of instalation RoundCube Webmail. In Step 5 is he asking to remove main.inc.php file and few line forward is he asking to modify this file.

Probably he ment to remove (rename) .dist of the end or is somewhere else an other main.inc.php file ?

Last time i had to change some things within my RoundCube howto, because we found out that there where some problems with saving identities within RoundCube.
For this reason i had to modify step 5 within this howto as well, but i completely forgot to do that.
Sorry, but now i have changed the text.

Following your instructions I have installed now RoundCube on Debian kernel 2.26 Sarge1 and ISPConfig 2.2.7 and averything seems to be o.k. in db.inc.php and main.inc.php but the login stays hanging without any messages at all.

Probably it is not possible to log in as localhost. What do you think about this issue.

there is allready a Maildir in this web. The problem is somewhere else. Also I posted an email and it is received in this Maildir.

But now an other complication is erising. At this moment I have 2 accounts. One emailaccount on hostname and the other one on webmail.hostname. I like to use the same accont for webmail as wel for Outlook. It is probably possible to change the settings in db.inc.php in order to use the same account for both of them.